Johann resch



No. 625,604. Patented May 23, `|1599. J. RESCH.

CYCLE DRIVING MECHANISM.

(Apxiction med Jan. 2a, 189s.)

,No Mudel.) 2 Sheets-Sheet Il.

No. 625,604. Patented May 23, |899` J. RESCH. CYCLE DRIVING MEGHANISM.

(Application led Jan. 26, 1898.)

2 Sheets-Sheet 2.

No Model.)

92ml/ A n fra/rim) www NrTED STATES PATENT OFFICE.

JOHANN RESCI-l, OF GRAZ, AUSTRIA-HUNGARY.

CYCLE DRIVING MECHANISM.

SPECIFICATION forming part of Letters Patent No. 625,604, dated May 23,1899.

Application filed January 25, 1898. Serial No. 667,862. (No model.)

To 'c1/ZZ whom t mln/y concert/1.:v

Be it known that I, J OHANN REsoH, a subject of the Emperor ofAustria-Hungary, and a resident of Graz, Austria-Hungary, have inventedcertain new and useful ImprovementsV in Cycle DrivingMeehanism, of whichthefollowing is a full and clear specification.

This invention relates to a bicycle adapted to be geared for slow andquick motion by means of a hollow transmission-shaft and an inner shaftwhich is adapted to rotate at times freely within the hollow shaft andat others to be locked thereto, all as hereinafter more fully pointedout.

In the accompanying drawings, Figure lis a side view of the bicycle;Fig. 2, a sectional elevation of the driving mechanism, the slowmotiongearing being used; Fig. 2a, a crosssection on the lineXXof Fig. 2; Fig.3, a sectional elevation of the driving mechanism,

the quick-motion gearing being used. Fig. i

is a cross-section on the lineYYof Fig. 3, the spring-latch beinglocked; Fig. 5, the same section, the spring-latchv being opened.

Similar letters of reference indicate corresponding parts.

On the crank-axle ois fixed a bevel-gear la, meshing with a bevel-geare, connected rigidly with the gear CZ on shaft Shaft a: is supported inball-bearings q q' (12in the hollow axle a'.

On the rear-wheel hub is fixed a bevel-gear R, meshing with a bevel-gearf, keyed on the hollow axle a and supported in bearings m m', the cone mthereof being screwed to the coneholder g by means of a nut t. Theconeholder is made in one with or fastened rigidly to the rear fork P,thus serving as support for the cone fm and for the rear-wheel axle w.

Sliding on but turning with the hollow' that the gears be maybe engagedwith ordisengaged from the gears a d, respectively. This sliding motionof this shaftis performed by means of a lever Z, pivoted at Z2,connected With the shaft by a fork Z', working in a circular notch y onvthe end of shaft y. The lever Zis thrown by a rod o', provided with aknob e and notches jj j? and passing through the frame-tube M, in whichis iitted aspring v2, pressing the rod against the frame, so as to forcea pin 3'3, fastened to the frame, to enter one of the notchesjj y2,thereby locking the rod in the desired positions.

The operation is as follows: Supposing the mechanism to be in theposition shown in Fig. 2, the pinj3 enters the notch jg in the rod fv,and the gears b o are engaged with the gears a d, gear a beingdisengaged from gear e. Thereby the transmission of motion from thecrank-axle to the driving-wheel is as follows:

Bevel-gear Zo, fixed on crank-axle o, meshesI with bevel-gear e,fastened rigidly to gear d, which meshes with gear c on shaft y. Gear h,keyed on this shaft, meshes with gear a on the hollow shaft e', to whichis fixed the bevel-gear f, meshing with bevel-gear R on thedriving-wheel hub. This is the normal or slow-motion gearing. Ifquick-motion gearing is desired, the knob o is pushed down so that pinis engages with notch j on rod of. Thereby shaft y is moved axially,disengaging gears b and c from gears a and CZ, respectively, andpushingv by means of a disk r, attached to the gear b, the gear a towardgear e, so as to connect both gears by means of pins a and holes s. TheVpower is now transmitted directly by the double gearingle eand f R, andthus quick motion is obtained.

To allow gear a to move axially, spring- IOO latch his disengaged fromthe notch h2 by disk r on shaft y, which lifts said springlatch whenmoving axially with said shaft.

The crank-axle can be completely disengaged from the driving-gear bypushing rod 'u' in its middle position, pin js entering notch j. Thengears b c are disengaged from gears a d, gear a being not connected withgear e, whereby the transmission between crankaXle and driving-wheel iscompletely interrupted. This is advantageously used when riding down ahill.

What I claim as my invention, and desire to secure by Letters Patent, is

l. The combination with a driving-Wheel and means for connecting it witha hollow shaft, of a bevel-gear on the crank-axle, a bevel-gear meshingtherewith and keyed on an inner shaft rotating in the hollow shaft andmeans for connecting together the two shafts, the inner shaft beingadapted to rotate at times freely within the hollow shaft and at othersto be locked thereto, substantially as described.

2. The combination of a driving-wheel, a hollow shaft connectedtherewith, a spur-gear feathered thereon, a shaft rotating in saidhollow shaft, a spur-gear keyed thereon and a shaft with two gears whichengage respectively with said two spur-gears, substantially asdescribed.

3. The combination of a driving-wheel, a hollow shaft connectedtherewith, a shaft rotating therein, spur-gears on these shafts, a

" shaft with two gears engaging with said spurgears, a leverfor movingaxially this shaft, a rod operating this lever and a pin, entering innotches formed in this rod, for the purpose of locking the rod in thedesired positions,

substantially as described.

